Environmental pollution by heavy metals has been extensively researched using different materials and techniques but, this problem has not been fully resolved. High adsorption capacity of iron oxides such as hematite, magnetite, goethite and, ferrihydrite to remove arsenic are described in this review. There are many international investigations about the minerals of iron oxides and they describe the composition, properties, synthesis methods and involved variables. Active carbon, silicones and polymers had been used to obtain composites with iron oxides and they have gave better results to remove different anions and cations. The aim in this paper is to introduce studies already carried out and encourage research in this topic to take advantage of the particular characteristics of iron oxides and use them in the environmental remediation. In addition, it is important to introduce the natural iron oxides availability that have a lot of field to study. The literature search on the subject was carried out in Science Direct and high impact articles related to natural or synthetic oxides were used. Keywords: Arsenic, hematite, magnetite, goethite, iron composites. Resumen La contaminación ambiental por metales se ha estudiado mucho con diferentes materiales y técnicas, pero aún no se ha logrado resolver por completo este problema. La alta capacidad de adsorción de los óxidos de hierro como la hematita, magnetita, goetita, ferrihidrita, para la remoción de arsénico en agua son descritos en este trabajo de revisión. Existen muchas investigaciones internacionales de los óxidos de hierro en las que se expone la composición de estos minerales, las propiedades, métodos de síntesis y las variables que intervienen. El carbón activo, las siliconas y los polímeros son materiales que se han usado para formar compositos con estos óxidos que han contribuido a obtener mejores resultados en la remoción de diferentes aniones y cationes. Con este trabajo se pretende difundir estudios ya realizados e incentivar la investigación en este campo para aprovechar las características particulares de los óxidos de hierro y usarlos como remediadores ambientales. Ademas, es importante dar a conocer la existencia de óxidos de hierro naturales que dejan mucho campo por estudiar.
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